Abstract:

A set of micro-photographic lenses, with large aperture and high resolution, has been designed based on Д. C. Boпocob formula, and its initial configuration is calculated through the PW method. The structural rationality of lenses is systematically examined in NSC（Non-Sequential Component）situation. The F-number of the lens is 2.2, FOV angle is 65°, the total length of optical system is 6.13 mm, and the effective focus is 4.5 mm. The lenses system consists of 4 plastic aspheric lenses and 1 IR filter, in which the lenses of No.1, 3, and 4 are positive lenses, No.2 lens is negative lens, and the aperture stop is placed in front of the first lens. The optimized results indicate that RMS spot radius at each field is almost less than the radius of Ariy disk, the MTF value is more than 0.54 at 1/2 Nyquist sampling frequency, and the distortion is less than 2%. The lenses system equipped with AR8033 CMOS from Aptina has formed applicable micro-photographic lenses of 8 mega-pixel.

Key words: optical engineering; photographic lens; Non-Sequential; F-number